// Immutable简介： https://juejin.cn/post/6844903588548837389

const { Map } = require('immutable')

let m1 = Map({ a: 1, b: 2, c: 3 })

// console.log(m1.get('a')) // 1

let m2 = m1.set('a', '11')

console.log(`m2.get('a')`, m2.get('a'))
console.log(`m1.get('a')`, m1.get('a'))
